Improvement in heel-trimming machines



. 2 Sheets-Sheet 1.

H. A. HENDERSON 85 H. 0. PAINE. Heel-Trimming Machine.

No. 220,920. Patented 90;, 28,1879.

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N4 PETERS. PHOO-LITHOGRAPH 2 2 Sheets-PSheet 2. H. A. HENDERSON 8; H..G. PAINE. Heel-Trimming Machine, No. 220,920. Patented Oct. 28, 1879.

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N.PETER& PHOTO-UTHOGRAPHER, WASHINGTON D C UNITED STATES HENRY A.HENDERSON AND HOLLIS O. PAINE, OF LYNN, MASSACHUSETTS.

PATENT QFFIGE.

IMPROVEMENT IN HEEL-TRIMMING MACHINES.

Specification forming part of Letters Patent N0- 220,920, dated October98, 1879; application filed August 4, 1879.

To all whom "it may concern.-

Be it known that we, HENRY A. HENDER- soN and Hours 0. PAINE, both ofLynn, in the county of Essex, in the Commonwealth of Massachusetts, haveinvented an Improvement in Heel-TrimmingMachines, of which the followingis a specification.

This invention has for its object the following improvement inheel-trimming machines, and is particularly adaptable for use in shapingwooden heels. Y

Reference is made to the accompanying drawings in explaining the natureof our invention, in which Figure 1 is a plan of our machine; Fig. 2, afront elevation thereof; Fig. 3, a perspective of a block from which awooden heel is molded. It also represents the perspective of a completeheel; Fig. 4 is an enlarged view of the heel-holding devices; Fig. 5, avertical section; and Fig. 6, a crosssection on the line a a, Fig. 4.

It is important in shaping wooden heels to mold them with the grain ofthe wood, as fewer heels will be chipped or fractured by the action ofthe cutters, a fairerand more uniform result obtained, and the work ofthe cutters made easier than by any other method of removing the stock;and we are informed that all machines for doing this work now in use outone side of the heel at least against the grain of the wood.

In order to shape the heel with the grain it is desirable to employ twocutters arranged to revolve in opposite direction, each of whichcompletely shapes one side of the heel, commencing with the front cornerand extending lfiaclrward to the center of the back part of the It isnecessary that the block from which the heel is made should be sopresented to each cutter that the block may be partially rotated inrelation to the cutter, and at the same time have a vertical movement inrelation thereto, if desired-that is, the heel-block must be partiallyrevolved on a curve corresponding to that of the finished heel, and atthe same time it must be provided with a vertical movement, whichcontinues during the partial revolution necessary in turning the heelfrom the edge which is first brought in contact with the cutter to apoint a little beyond the center of the back part.

Upon the completion of one side and a portion of the back of the heel bythe action of one of the two cutters, the heel-block must be easily andrapidly transferred to aposition in relation to the other cutter similarto that occupied in connection with the first cutter, and the samemotions must be gone through with, but in a reverse direction, as withthe said first cutter, in order that the other side of the heel may bemolded.

Our invention, therefore, embraces, first, two cutter-heads arranged torotate in opposite directions; second, means for holding the heel-blockand for presenting it to the cutters; third, means for rotating theholding mechanism, and for providing it with any other desirablemovement in relation to the cutter during its rotation fourth, means fortransferring the heel-holding device from one cutter to the other;fifth, suitable guides or tracks for directing the movement of theheel-holding device in relation to the cutters, and for supporting thesame during the transfer.

A A represent the two cutter-heads, each of which is provided withknives a, whose cutting-edge is shaped to approach an ogee curve. Theknives are fastened to the heads in any desirable manner, and arerotated by any suitable mechanism in opposite directions. Theheel-holding device consists in the supporting bed or plate B, carriedby the block B, which is pivoted at b to the brackets 11, projectingupwardly from the plate b This plate is provided with the long pivot bprojecting downwardly therefrom into the socket b in the end of theframe b and is provided with a vertical movement therein. The crane isattached to any suitable support in any desirable manner, and preferablyshould be provided with a slight vertical movement on the bolt Bsecuring it in position.

The block B is provided with the projection or handle b also with atongue, 12 which extends downwardly therefrom into a slot or recess, 12in the plate N, which, in connection with the tongue, serves to preventthe holder B from being tipped as it is moved vertically in relation tothe cutters. The set-screws b riers may be employed in looking the blockB to the plate I) when necessary.

Projecting upwardly from the block B are the brackets C, which areadjustabl y fastened by the slots 0 and set-screws c to the block. Atthe upper end of the bracket is pivoted, at c, a jaw, 0 which isprovided with a movement to and from the bed supporting the heel, and isarranged to be closed upon the surface of the inverted heel by means ofthe hamlscrew 0, which passes through a nut, c, in the arm 0 and bearsupon the extending portion 0 of the block B.

The jaw is further provided with a handle, 0 The lower end of the pivotb is provided with an arm, I), which is secured thereto by a setscrew,d, or in any other suitable way. This arm is arranged to projectoutwardly from the end of the pivot, and rests upon the guide or trackG.

The heel-supporting bcd may be provided with short spurs or a roughenedsurface, and is supplied with a gage, E, which, by means of theset-screw c and slot 0, is adjustable to and from the front edge of thebed.

The edge F of the table b serves as a guide in connection with a guideor pattern, F, upon each shaft carrying a cutter-head, and below it.These two patterns regulate the size of the heel-seat. The guide F isprovided with arms f, which are secured to the frame F by screwsf. Thisconstruction allows the guide F to be easily removed.

The conformation of the heel from the top downwardly is governed by themovement given the heel-block while it is being presented to thecutters, and, to a certain extent, upon the shape of the cutting-knives.

The guides or tracks G G describe upon the portions 9 an arc of acircle, of which the pivot b is the center, and they are inclined fromtheir juncture with the portion y of the two frames.

The two frames or tracks are supported upon their respective standardsg' g, each of which is provided with vertical adjustment upon the postsor uprights g by means of the slots 9 and set-screws g in one instance,and the slots 9" and the setscrews g in the other.

In operation, the heel-holding mechanism is moved to a position midwaybetween the two cutter-heads. The inverted heelblock is then placed uponits bed, the jaw 0 looked upon it by means of the screw 0'", and theoperator, taking hold of the handles 0 and If, swings the heel-holdingmechanism upon the guides or tracks G G to such a position in relationto one of the cutter'heads that it shall commence to cut at the frontedge of the heel. This position, of necessity, must be the lowestportion of the guides, and is, therefore, at their extreme end either tothe right or to the left. The heel-holding mechanism is then partiallyrevolved upon the pivot b the heel-supporting bed being lifted slight-1y during this movement by means of the track or guide G and the arm D.At the same time the bed may be slightly inclined in relation to thecutters by the track or guide G and the handle b. This upward movementof the heel-block changes the shape of the vertical curvature of theheel from that shown at r at the commencement of the turning to thatshown at r at the center of the back of the heel at the end of theturning. The shaping of one side of the heel and a portion of the backof the heel is thus completed. The heel holding mechanism is then swunground upon the center .1, by the movement of the crane thereon, to aposition at the other end of the guides or tracks G G. This brings thefront uncut portion of the heelblock in a position to be operated uponby the other cutter. The heelholding mechanism is then partiallyrevolved in relation to the cutter, the arm 1), rising on the track G,and the handle b" on the track G, as before stated, but in a reverseddirection. This completes the other side of the heel. The heel-holdingmechanism is then moved to its original position and the heel removed.

The shape given the heel depends npon the position and movement whichthe heel-supporting bed has in relation to the revolving knives, andupon the shape of the knives, and in heels having their upper surface ofthe same size, the change can be produced without always changing theknives, by simply varying the extent of inclination of the heel'snpporting bed in relation to the cutter. This is obtained by raising orlowering the tracks or guides G G. If a heelof larger size is beingshaped, the pattern F is removed and a larger pattern inserted in lieuthereof. If more of an offset is desired, the knives may be changed, andthe extent of the inclination and vertical movement of theheel-supporting beds varied by changing the level of the tracks orguides in relation to the cutters; Therefore, among the adjustmentswhich it is necessary to give this machine in order to enable it toembrace all sizes and curvatures of heels, may be mentioned, first, thatwhich embraces a change in the shape of the cutting-edge of the knives;second, that which relates to a change in the inclination of theheel-supporting bed, and to a change in its movement in relation to thecutter; third, that which involves aehange of the pattern F; fourth,that which demands the adjustment of the gage E.

The heel-holding mechanism, it will be observed, must have thesemovements in relation to the cutter: first, it must present the heel toeach cutter-head with like facility; second, it must be capable of beingso operated that while the heel-supporting bed is revolving it is alsolifted vertically in relation to the cutterhead. It may be provided witha movement inclining the bed in relation to the cutter during saidrevolving and lifting movements, if desirable.

If necessary, we can do away with the up per guide, G, in which case wedepend upon the lower guide, G, for the necessary vertical movement ofthe heelsupporting bed.

It will be observed that when the heel'supporting bed is providedadditionally 'with a movement changing its degree of inclination inrelation to the cutters, the said movement commences with the upwardmovementi and continues with it until about two-thirds of one side ofthe heel is finished, and that it then ceases, the upward and revolvingmovements only continuing.

Having thus fully described our invention, we claim and desire to secureby Letters Pat- ,entof the United States- 1. In a heel-trimming machine,the combination of two revolving cutters, adapted to rotate in oppositedirections, with the guides or tracks G G and mechanism for holding andpresenting the heel-block to the cutter-heads, and for transferring itfrom one cutter to the other without removing it from the holdingdevice, substantially as described.

2. In a heel-trimming machine, the combination-- of two cuttersrevolving in opposite directions, mechanism for holding the heel forpresenting it to either of the said cutters, and

for providing it with the necessary movements in relation thereto,comprising a rotating movement and a lifting movement of the'heelsupporting bed, all arranged and combined to operate substantiallyas described.

3. In a heel-trimming machine, the combination of two revolving cuttersarranged to rotate in opposite directions, the heel holding andpresenting mechanism, and the crane L arranged to transfer theheel-holding mechanism t'rom one cutter to the other, substantially asand for the purpose described.

4. In a heel-trimming machine, the combination of two oppositelyrevolving cutterheads, the crane b the tracks or guides G G, the arm D,and handle b all arranged to operate substantially as and for thepurpose described.

5. In a heel-trimming machine, as a means for presenting theheel-holding device to two oppositely-revolving cutter headssuccessively, the crane b thetrack G, and the arm D, substantially asdescribed.

6. The combination,in a heel-trimming machine, of a revolvingcutter-head, the transferring-crane b the heel-holding mechanism, thearm D, and the track G, all substantially as and for the purposesdescribed.

7 In a heel-trimming machine, a verticallyadjustable track or guide forproviding the heel holding and presenting mechanism with a verticalmovement in relation to cutter-heads rotated in opposite directions,while the said mechanism is being rotated in relation thereto,substantially as described.

8. In a heel-trimming machine, as a means for adjusting the jaw 0 thesupports 0 provided with vertical adjustments on the block Bsubstantially as described.

9. In a heel-trimming machine, the combination of the plate b providedwith the brackets b, and the recess 1)", with the block B, supportingthe heel-plate B, pivoted at b to the brackets b and the tongue I),substantially as described.

10. In a heel-trimming machine, the combi nation of block B with thescrew b, or other device for looking it to the plate 11 all substantially as described.

11. In a heel-trimming machine, the remov able patterns F, provided withthe arms f, and adapted to be fastened to the frame F by the screw f,all substantially as described.

HENRY A. HENDERSON.

HOLLIS O. PAINE.

Witnesses:

F. F. RAYMOND, 2d, GEO. F. WALKER.

